Xanthones and Xanthone O\textit{O}‐β\textit{β}‐D‐Glucosides from the Roots of Polygala azizsancarii\textit{Polygala azizsancarii} Dönmez

Nine xanthone derivatives (1–9) were isolated from the roots of Polygala azizsancarii, which is a narrow endemic species for the flora of Türkiye. Based on all of the evidence, the structures of 1–9 were established as two previously undescribed xanthone O-glucosides, 3-O-β-D-glucopyranosyloxy-1,6-dihydroxy-2,5,7-trimethoxyxanthone (1), 3-O-β-D-glucopyranosyloxy-1,6-dihydroxy-2,7-dimethoxyxanthone (2), and seven previously described xanthones, 1,3,6-trihydroxy-2,5,7-trimethoxyxanthone (3), 1,3,6-trihydroxy-2,7-dimethoxyxanthone (4), 1,2,3,4,7-pentamethoxyxanthone (5), 1,3-dihydroxy-2,5,6,7-tetramethoxyxanthone (6), 1,3-dihydroxy-4,7-dimethoxyxanthone (7), 1,7-dihydroxy-3-methoxyxanthone (8), and 1,7-dihydroxy-2,3-methylenedioxyxanthone (9). The structures of the compounds were determined by spectroscopic methods, including 1D-NMR (1H-NMR, 13C-NMR, DEPT-135), 2D-NMR (COSY, NOESY, HSQC, HMBC, INADEQUATE), and HR-MS. The solid-state structures of 1–4, including the absolute configurations of the stereogenic carbons of the sugar moiety in 1 and 2, were established by X-ray crystal-structure analyses. For the newly described compounds, the trivial names sancarosides A (1) and B (2) are proposed

Report of the Special-purpose Committee on Virtual Participation in the Nomenclature Section

The Special-purpose Committee on Virtual Participation in the Nomenclature Section was established by the XIX International Botanical Congress (IBC) in Shenzhen, China in 2017, with the mandate “to investigate the possibility of and mechanisms for virtual participation and voting in the Nomenclature Section of an International Botanical Congress via the internet” and to report to the XX IBC. The wide access to the World Wide Web and availability of software for virtual meetings makes the possibility for virtual (online) attendance and voting at a Nomenclature Section seem attainable and advisable. In order to make informed recommendations, we discussed various aspects of online attendance and voting, such as: who should be able to observe?; what would qualify a person to cast institutional votes and personal votes?; if the accumulation of institutional votes should be allowed by an online voter; registration of online voters; how costs would be covered; and recommendations for online attendees. This report provides a synthesis of our discussions and is necessary for interpreting the proposals of this Special-purpose Committee to change aspects of Div. III (Provisions for governance) of the Code (Landrum & al. in Taxon 70: 1397–1398. 2021). This report and those proposals should be consulted together.Fil: Landrum, Leslie R.. Arizona State University; Estados UnidosFil: Fortunato, Renee Hersilia. Universidad de Morón. Facultad de Agronomía y Ciencias Agroalimentarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; ArgentinaFil: Barkworth, Mary. State University of Utah; Estados UnidosFil: Breitwieser, Ilse. Manaaki Whenua – Landcare Research; Nueva ZelandaFil: Demissew, Sebsebe. Addis Ababa University; EtiopíaFil: Dönmez, Ali A.. Hacettepe University; TurquíaFil: Dutta, Suchandra. Rishi Dayaram And Seth Hassaram National College And Seth Wassiamull Assomull Science College; IndiaFil: Freire Fierro, Alina. Universidad Regional Amazónica Ikiam; EcuadorFil: Kim, Young Dong. Hallym University; Corea del SurFil: León, Blanca. Universidad Nacional Mayor de San Marcos; PerúFil: Moore, Gerry. United States Department of Agriculture; Estados UnidosFil: Mosyakin, Sergei L.. Academy of Sciences of Ukraine; UcraniaFil: Oh, Sang Hun. Daejeon University; Corea del SurFil: Parra-O, Carlos. Universidad Nacional de Colombia; ColombiaFil: Prado, Jefferson. Instituto de Botânica de Sao Paulo; BrasilFil: Rico Arce, Lourdes. Comisión Nacional para el Conocimiento y Uso de la Biodiversidad; México. Royal Botanic Gardens; Reino UnidoFil: Sennikov, Alexander N.. Russian Academy of Sciences; Rusia. University of Helsinki; FinlandiaFil: Smith, Gideon F.. Nelson Mandela University; Sudáfric

Taxonomic Notes on the Genus Crataegus (Rosaceae) in Turkey

The Turkish Crataegus taxa were investigated using morphological, palynological, and anatomical characters. A new series (Crataegus Section Crataegus Series Peshmenia), two new species (Crataegus peshmenii and Crataegus christensenii), and one variety (Crataegus rhipidophylla var. kutahyaensis) are described. Furthermore, Crataegus x browicziana has been assigned to Crataegus rhipidophylla with a new status. Illustrations of the described taxa and their distribution map are also given. The lectotype for Crataegus yaltirikii is designated here. (c) 2007 The Linnean Society of London.WoSScopu

Nouveautés nomenclaturales, taxonomiques et biogéographiques sur les <i>Crataegus</i> L. (Rosaceae-Maleae) turques

Crataegus davisii Browicz est un homonyme postérieur de C. davisii Sarg. Les auteurs, considérant qu’il s’agit d’une bonne espèce, proposent le nom Crataegus petrodavisii Dönmez, nom. nov. Crataegus × yosgatica K.I.Christ. est placé en synonymie de C. meyeri Pojark., et une description augmentée est fournie. Crataegus pseudoazarolus Popov, C. pseudoheterophylla Pojark. subsp. turcomanica (Pojark.) K.I.Christ. et Crataegus × lavallei Hérincq ex Lavallée sont pour la première fois cités de Turquie. Des nouvelles descriptions des taxons concernés sont fournies.Crataegus davisii Browicz is a later homonym of C. davisii Sarg., and the species has been renamed as Crataegus petrodavisii Dönmez, nom. nov., following its acceptance as a valid species. Crataegus × yosgatica K.I.Christ. is reduced to a synonym of C. meyeri Pojark., and an emended description of the species is given here. Crataegus pseudoazarolus Popov, C. pseudoheterophylla Pojark. subsp. turcomanica (Pojark.) K.I.Christ. and Crataegus × lavallei Hérincq ex Lavallée are new records for the Turkish flora. New descriptions of the taxa concerned are provided.</p

Nigella_UPGM

It is a text file including UPGM coding of the study. It is also run for PAST programm

Data from: Numerical analyses of seed morphology and its taxonomic significance in the tribe Nigelleae (Ranunculaceae)

In this study, the seed morphology of the taxa Nigella, Garidella, and Komaroffia were examined to provide systematic knowledge about the tribe Nigelleae. The seeds of 21 taxa in 20 species from Mediterranean and West Asian countries were studied using both zoom stereo and scanning electron microscopy (SEM). A principal coordinate analysis (PCoA) and Unweighted average linkage analysis (UPGMA) were performed to assess the contribution of seed characters to defining the taxonomy of the tribe. Representative pictures from zoom stereo microscopy and SEM studies and measurement of seeds were prepared. Seed shape and color are controversy with proposed generic level of the tribe. Macromorphological characters have importance at sectional level rather than generic level. Five main types of seed ornemantations– rugulose+striate, granulate, smooth, rugulose and mucronulate‐ were detected. Patterns in seed micromorphology, however, mainly supported taxonomic relationships at sectional treatment in Nigella and two of the three sections are well differentiated based on only seed characters. Seed morphology alone provide good support to Garidella as a distinct species, but it shows less taxonomic value for Komaroffia. Distinct seed shape, size, and surface sculpturing separated studied taxa into five main groups

Astragalus Ihsancalisii (Fabaceae), A New Species from Erzurum Province, E Turkey

Astragalus ihsancalisii Donmez & Ugurlu (Fabaceae) is described as a new species from Erzurum province in E Turkey. The new species belongs to A. sect. Incani DC. and is similar and possibly related to A. glaucophyllus Bunge and A. guzelsuensis F. Ghahrem. & al. from Turkey and A. siahcheshmehensis Maassoumi & Podlech from Iran. Astragalus ihsancalisii is clearly distinguished from those three species by flower number per raceme, bract size, pedicel length, standard length and legume beak length, among other characters. Diagnostic characters are given and their taxonomic importance is discussed. Photographs of A. ihsancalisii in the field are presented. In addition, SEM micrographs of leaf and legume surfaces of the new species and A. glaucophyllus and A. guzelsuensis are provided for comparison. The conservation status of A. ihsancalisii is also assessed according to field observations.WoSScopu